Shikaku


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Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

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Shikaku


5x5 Shikaku | 7x7 Shikaku | 10x10 Shikaku | 15x15 Shikaku | 20x20 Shikaku | 25x25 Shikaku

This Month
1. JZE
82
00:03.96
2. Parade
17
00:05.79
3. Jen Jay
26
00:07.30
4. qobi
226
00:08.94
5. gh
56
00:09.06
6. GeorgPfleger
88
00:09.17
7. HDXX123456789 00:10.02
8. wow shibby
10
00:10.16
9. KETJAK
31
00:10.73
10. May John
64
00:10.78
11. zibigibi
13
00:10.88
12. llmt9
81
00:10.96
13. arandomperson1
25
00:10.99
14. prinsed
32
00:11.85
15. pato3042 00:11.92
16. Dorice
242
00:12.03
17. chube 00:12.04
18. Lanmo
41
00:13.15
19. HackMan
106
00:14.79
20. crema
167
00:15.92
This Week
1. gh
56
00:09.06
2. KETJAK
31
00:10.73
3. zibigibi
13
00:10.88
4. GeorgPfleger
88
00:11.01
5. prinsed
32
00:11.85
6. llmt9
81
00:16.29
7. HackMan
106
00:16.75
8. sronse 00:18.86
9. CLAVDIVS
55
00:29.15
10. dynesonne 00:32.60
11. shangdou
23
00:48.21
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. GeorgPfleger
88
00:14.31
2. HackMan
106
00:16.75
3. CLAVDIVS
55
00:44.66
4. shangdou
23
00:48.21
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. zahhydude1
194
00:03.48
2. vowels
216
00:03.81
3. demian2
61
00:04.66
4. Vicellen
13
00:04.70
5. BingBongBob
108
00:05.15
6. JZE
82
00:05.16
7. numbrr
297
00:05.20
8. nabi
92
00:05.27
9. coolcoolguy65
151
00:05.33
10. mtanzer
140
00:05.34
AO5
1. zahhydude1
194
00:03.76
2. vowels
216
00:03.88
3. demian2
61
00:04.92
4. Vicellen
13
00:05.06
5. numbrr
297
00:05.32
6. BingBongBob
108
00:05.39
7. nabi
92
00:05.41
8. bearn
206
00:05.55
9. JZE
82
00:05.75
10. coolcoolguy65
151
00:06.01
AO12
1. zahhydude1
194
00:04.54
2. vowels
216
00:04.91
3. BingBongBob
108
00:05.84
4. Vicellen
13
00:06.24
5. numbrr
297
00:06.26
6. demian2
61
00:06.31
7. JZE
82
00:06.39
8. bearn
206
00:06.41
9. coolcoolguy65
151
00:06.66
10. nabi
92
00:06.91
Robots / programmatic solversinfo  
1.tlstyer
120
00:00.006
2.Charlie Li
61
00:00.207
3.Paul Bismuth
1
00:01.692

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-07-04 19:16:11

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